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Message-ID: <20140420205923.GA23991@suse.de> Date: Sun, 20 Apr 2014 21:59:23 +0100 From: Mel Gorman <mgorman@...e.de> To: John Stoffel <john@...ffel.org> Cc: Andrew Morton <akpm@...ux-foundation.org>, Robert Haas <robertmhaas@...il.com>, Josh Berkus <josh@...iodbs.com>, Andres Freund <andres@...quadrant.com>, Christoph Lameter <cl@...ux.com>, Linux-MM <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>, Michal Hocko <mhocko@...e.cz> Subject: Re: [PATCH 0/2] Disable zone_reclaim_mode by default v2 On Fri, Apr 18, 2014 at 04:48:25PM -0400, John Stoffel wrote: > >>>>> "Andrew" == Andrew Morton <akpm@...ux-foundation.org> writes: > > Andrew> On Tue, 8 Apr 2014 09:22:58 +0100 Mel Gorman <mgorman@...e.de> wrote: > >> Changelog since v1 > >> o topology comment updates > >> > >> When it was introduced, zone_reclaim_mode made sense as NUMA distances > >> punished and workloads were generally partitioned to fit into a NUMA > >> node. NUMA machines are now common but few of the workloads are NUMA-aware > >> and it's routine to see major performance due to zone_reclaim_mode being > >> enabled but relatively few can identify the problem. > > > This is unclear here. "see major performance <what> due" doesn't make > sense to me. > Degradation -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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